Is there any info on how this would be enforced? Will it be enforced on the system level or with Play Protect or something similar?
"Verified Developers" are coming to Google Play.
Yes, this even applies to sideloading applications. Yes, sideloading will still technically be allowed, but only if the app comes from a verified developer.
Sideloading apps from unverified developers will be blocked on certified Android devices/OS, regardless of how you obtain the APK.
It seems the only way to install apps from nostr:nprofile1qqs83nn04fezvsu89p8xg7axjwye2u67errat3dx2um725fs7qnrqlgpzemhxue69uhkummnw3ex2mrfw3jhxtn0wfnj7klqyqq in the future might be to run a custom ROM such as Graphene, etc.
https://android-developers.googleblog.com/2025/08/elevating-android-security.html
Discussion
I assume part of Google Play Services.